Sell Glass radiometer

Description

Glass radiometer is a new technical high appreciation of the novelty, scientific glass handicraft. It can be in the room desk or windowsill put, also can be in outdoor garden serves as adornment ornamental, also can appear in your seat, as sunshine in a heat or light under the irradiation of under direct sunlight, need not say oneself, even the beam from a flashlight, fire burning can also make leaf operation since, it is the most simple demonstration of solar power.

Glass radiometer structure and principle

Glass radiometer is in ***5 by the famous British physicist Crookes invention, used to detect light and thermal, its construction such as photo shows: glass radiometer is by hand blown crystal glass, also known as light windmills. From a sealed glass sphere shell, it contains a vacuum in the vitreous body part, in with a by fluctuation two glass as bearing straight vertical shaft pits, shaft of four upper *0 degrees apart with spindle parallel pieces of metal blade, made by fine steel wire and spindle vertical connected, sheet metal two side for white and black, respectively, when there are strong enough sunlight or strong tungsten lighting irradiate leaves, leaf began around straight vertical shaft rotation, radiation is stronger, faster speed, after the experiment of direct sunlight or, at noon the tengsten lamp (illuminance over *0W ****0Lux) can make greater generate about 3 ~ 5cps rotor speed, because of the rotor blades and bearing between friction and inertia, general indoor illume enough to reduce rotor rotating. Even stronger tengsten lamp (*0w above) close direct illuminate, also need to pass a start-up and accelerate gradually process, in light of the circumstances, constant can reach to tens of seconds and the highest speed possible. According to the radiation theory of radiation heat and light brown, white flour reflect heat and light, and therefore always brown is pushed around straight vertical shaft rotation attaching and, therefore, when brown and white flour direction selected (factory has certain), the blade by optical rotation direction was completely is certain, will use by concerned, when its surface glare has chronological round clockwise (top-down), and never overlooking rotate counterclockwise. That leaves clockwise, when no longer accept and gradually cooling, heat is reverse rotation, with leaf water pouring drench, observe the direction is turning leaves radiometer reverse.